Double-drum hoist



June 30, 1925. f 1,543,846 I C. C. HANSEN DOUBLE DRUMVHOIST Filed April 3, 1924 Patented ti e n,

CHAR/LE5; c.

FLAHSELG', 4633 EASION, PENNSYLVANIA, ASSIGNOB TO INGERSOLL-RAND Clt/1PANY, 531E J'EESEE'Z' 31113, NEW JERSEY, A GDRPORATTON OF NEW JERSEY.

DOUBLE-DRUM HOIST.

Application flied April 3, 1924;. Serial 1%. 708,876.

To all whom it may concern:

Be it known that i, Unannm C. HANsnN,

. I a citizen of the United States, a resident 'of Easton, county of Northampton, and State of Pennsylvania, "have invented a certnm Double-Drum Hoist, of which the following is a specification accompanied by drawings.

This invention relates to hoist-s but more particularly to a power driven hoist of the is desired. These machines must be sturdy and rugged to withstand the hard usage to which theyare ordinarily subjected, but 0 the other hand, they must be as light and compact as possible to enable them to beeasily transported from place to place and mounted in any desired or convenient poortion. 5, z

The objects of this invention are to enable two drums, as a haulage and tail rope drum,

to be driven from a common source of power by improved devices so as to permit one of the drums to be driven and the other drum to be freely rotated about a common shaft,

' in accordance with the direction of rotation of the driving means.

In accordance with this inventim'i a main driver is located on the drum shaft be tween the two drums of the hoist and a,

longitudinally extending pawl is pivoted at its center on an axis transverse to the drum 7' shaft so that the pawl is locatedin a plane passing through the longitudinal axis of i the shaft on which the drums are journaled.

The pawl is adapted to rock or oscillate about its axis transverse to the axis of rotation of the drums for automatically connecting one or the other of the drums to the main driver, in accordance with the direc tion of rotation of the driver. Further objects of the invention will hereinaftcr appear and the invention is shown inXone of its preferred forms in the accompanying drawings, in which E'gure 1 isa longitudinal sectional elevation of a double drum hoist, and

Figure 2 is a transverse section taken on the line 2--2 of Figure 1, looking in the direction of the arrows.

Referring to the drawings, A designates a swivel mounting on which the base plate B is preferably mounted and secured thereto by bolts (not shown). The base plate'B upon which the hoist is mounted, is in this instance formedwith a saddle clamp G to enable the hoist to be clamped to a column or cross bar, if desired. End frames D are preferably secured to the base plate B in any suitable manner and" a shaft E is in this instance supported in the end frames D. The shaft E is preferably provided with thrust bearings F at the opposite ends thereof, and these thrust bearings are suitably journaled in sleeves G. Bearing caps H are in this instance secured to the end frames D over the sleeve/G by the tap bolts J to hold the shaft E in'its proper position. The shaft E is in this instance rotatable but if desired, this shaft may be stationary.

a bearing frame K is preferably secured to the base plate B by the bolts L and a shaft 0 is suitably journaled in the bearing frame K and a worm P is in this instance formed on theishaft 0. Only a portion ofthe bearing frame Kis shown on the drawing, and it is to be understood that the shaft 0 is suitably connected to be driven by a reversible motor of any suitable type. The details of construction of the bearing box K, the shaft 0 and the reversible motor are cation Serial No. (395,623, filed February 28,

1924;, and it is not necessary to explain here 7 A chamb'er T is preferably formed in each of the drums Q and R and isadapted to 'be filled with lubricant to supply lubricant to the shaft E through ports U in the bushings S. The chambers T may be suitably closed by a plug V. The drumsiQ, and R- are in this instance formed with annular recesses W and X and teeth Y merging into shown and described in my pending appli-.

llltl the cam surfaces Z are preferably formed in the Oil'ilfilfWlll of the recess W. Teeth a merging into cam surfaces b are preferably formed in fiche outer wall of the annular recess X and, fece in the opposite direction from time fiseetjh Y. The teeth Y and u on the dz-ume Q; and R respeclaively, constitute drivers ior the drums, but ii; ie be Hilda?" stood that liese teeeiimey formed on separate membeie secured o the drums, ii desired, because it is not desired in the invention icteeth formed on the druine.

A main diivei' o is preferably formed Wiilii a transverse slot eXtei-iding in the direction of the longitudinal axis of the machine. The main driver is in this instance secured to the ellei't E being suitably keyed. at e to enable the main driver 0 to rotate with ifilie shaft, although the main drive may zotz te aboui, the shaft ii if desired. The 11min dri er c is in this instance the form of e wheel, having teetli j about iis periphery which are adapted eoniesii with the worm P. A suitable housing 51 preferably encloses the inain driver :2 and a cap h. isfin this in some connected to the beefing frame K by suitable veep bolts 5. Means ere provided for automatically connecting the main driver o'to one or the other of the drums Q and R in accordance with the direction of rote;

tion-of the main driver and; inf-his instance,

e'pawi 7c is pivoted ei: its center on a pin 0 transverse to the aide of the main drive: in the slot '15 in the main driven The pewi is is ioceied in a plane passing through the longitudinal axis of "the shaft E and is adapted oseiiletc or cook on the pin 0 for engaging too direction of 'ioaetion of iiie nein driver 0,

Upon thef-ievei'eel of thedireciion 0 E rote- -v cion of the: main driver ail 1e ceni sui'fnoes Z or b on 'the eec'iiYY-end a respeceiveiy, serve to rock the pew]. onitlie pivot pin 0 to engage e teotiron one or theotlie of the drums (.3 and R, When oneof the drums is engaged by the pawl Z, the opposite end of the; pawl is free from the ZltljZlCfill'iLiiBQill so that when one of the ill-unis is driven the other di'mn'isiz've to rotate independently of the driven drum about. one shaft F, Suitable cables p zindfq are wound about the drums R and (iL-respeetively for. haulag purposes. I

In hoists of t-liiscluu-zieter, it is desirable to ex ,z'ttheln'z king or checking efiect on she drums Q and R sons to, prevent the cable on all Y 91 8;, according to idle."-

to the end frames D in any suitable manner, adjacent $50 the outer flange of each of the drums, and pinngers s ere slidably mounted in the sleeves r. The piungers s are provided with brake shoes 1- heving suitable brake linings u, and coil springs w are located between one end of the plungers 8 and adjust ing plugs w, so that the brake lining u will consfc entiy exert ii braking or checking efiieci; on the drums Q. and R. z

li claim:

1. in o, ilOlSil, the combination of a frame, 2i shaft snpprn'ted in said frame, a reversible motor, two drums rotatable about said shaft, main driver connected to be driven by said matey, o ipose. drum drivers on said drume and e trensveisely dinelly extending pawl cei'ried by said main driver. located and oscillating in a plane passing through lJlie longitudinal axis of the said shaft for engaging one or the other of the said opposed drivers in accordance with the direction of, rotation of the said main driver. v

2. In whoist, the combination of a frame, e shaft supported in said frame, two drums rotatable about said shaft, opposed drivers on said drums, e reversible motor, a main driver adapted to be operated by said meto;-, and e pawl pivoted on an axis transverse in the axis of said main driver and located in a plane passing through the longitudinal ezzie oi theseid shaft, and. adapted tobe ree kcd on its pivot for engaging one or the other of the said drivers, in accordance with the direction of ioi iion of said miiin driver.

3 In a hoist, the combination of :1 frame, a shaft supported in said frame, two drums membie about said shaft, opposed drivers. on szzni drums, :i reversible motor, unmi'n driver adapted to be operated by said mo- ;01', and H, longitudinally extending pawl transversely pivoted at its center to said main driver and located in :1. plane passing through the longii'udinai axis of the said shaft and edapted to be rocked on its pivot for engaging one or the other of the said drivers, in accordance with'bhe-direction of rotation of said ma n driver.

. In testimony whereof I have signed this specification CHARLES C. 'HANsEu pivoted longitw.

III 

